package com.musicstore.biz;


import java.sql.SQLException;

import com.musicstore.entity.ShoppingCart;

public interface ShoppingCartBiz {
	//添加商品
	void addCartItem(ShoppingCart cart,int id) throws SQLException;
	//移除商品
	void removeCartItem(ShoppingCart cart,int id);
	//修改数量
	void updateQuantity(ShoppingCart cart,int id,int quantity);
}
